Birds of America census

[Michael North <MNORTH@GUVAX.BITNET>]

Hello bibliophiles,

I am contemplating doing an American census of a nineteenth century great
illustrated plate book and have heard of a census that was done of
Audubon's Birds of America recently.  Does anyone out there know the
title and/or author of this census?  I've already done a few searches
but they haven't brought me anything.

Thanks in advance for any help!

Michael North
Special Collections
Georgetown University Library
mnorth@guvax.acc.georgetown.edu